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0434126004 - Click to call!
Sydney's Leading Demolition & Cleaning team
From demolition to done, GSK Building Solutions handles demolitions, de-fits and post-construction cleans.
"GSK Building was amazing with our office demo. They handled our defit and strip out, and then came back in for a post-construction clean. Fantastic job.
About us
About us
About us
Demolition, Defit & Cleaning. Sydney's Best.
At GSK Building Solutions, we provide expert demolition, de-fit, and post-construction cleaning services, delivering efficient and safe results for Sydney businesses. We handle your demolition project from demolition to 'done'.
Services
Services
Services
Demolition & Cleaning Services
Find out which one of our services fit the needs of your project
Commercial Demolition & Strip Outs
Whether you're making way for a fresh fit-out or returning a tenancy to base build, GSK delivers safe, efficient, and fully compliant commercial demolition and strip-out services across Sydney. From internal wall removal and flooring uplift to full defits of retail, office, and hospitality spaces — we handle every stage with precision, care, and minimal disruption. Our licensed team ensures all debris is removed, services are capped off safely, and your site is left clean and ready for the next phase.
De-Fit & Make Good
Moving out of a leased space? GSK specialises in full commercial de-fit and make-good services across Sydney. We remove all tenant-installed fittings, signage, partitions, flooring, lighting, and joinery — restoring the site to its original or base-building condition in line with lease obligations. From offices and retail stores to hospitality venues, we work efficiently and cleanly, coordinating with landlords, strata, and building managers to ensure a smooth, compliant handover. Whether you need a basic de-fit or full reinstatement works, GSK has it covered.
Residential Demolition
Planning a renovation or rebuild? GSK offers safe, controlled residential demolition services tailored to homes and multi-unit dwellings across Sydney. From partial internal demolitions to full structure knockdowns, we manage every step — including permits, safety compliance, and site clearance. Our team works with homeowners, builders, and architects to ensure the demolition phase runs smoothly, with minimal disruption to surrounding properties. Whether it’s a kitchen rip-out, bathroom strip, or entire house teardown — we deliver clean, efficient results ready for your next build phase.
Post-Construction Cleaning
After the build is done, we make it shine. GSK delivers meticulous post-construction cleaning for commercial, residential, and industrial projects across Sydney. From dust-covered floors to smudged windows and builder’s residue — we clean every surface, fitting, and corner to ensure the space is spotless, safe, and handover-ready.
Brick Cleaning
GSK provides professional brick cleaning services for new builds, renovations, and restorations across Sydney. Using industry-approved acid wash and pressure cleaning techniques, we remove mortar stains, cement residue, and construction grime — restoring your brickwork to a clean, even-toned finish.
Commercial Demolition & Strip Outs
Whether you're making way for a fresh fit-out or returning a tenancy to base build, GSK delivers safe, efficient, and fully compliant commercial demolition and strip-out services across Sydney. From internal wall removal and flooring uplift to full defits of retail, office, and hospitality spaces — we handle every stage with precision, care, and minimal disruption. Our licensed team ensures all debris is removed, services are capped off safely, and your site is left clean and ready for the next phase.
De-Fit & Make Good
Moving out of a leased space? GSK specialises in full commercial de-fit and make-good services across Sydney. We remove all tenant-installed fittings, signage, partitions, flooring, lighting, and joinery — restoring the site to its original or base-building condition in line with lease obligations. From offices and retail stores to hospitality venues, we work efficiently and cleanly, coordinating with landlords, strata, and building managers to ensure a smooth, compliant handover. Whether you need a basic de-fit or full reinstatement works, GSK has it covered.
Residential Demolition
Planning a renovation or rebuild? GSK offers safe, controlled residential demolition services tailored to homes and multi-unit dwellings across Sydney. From partial internal demolitions to full structure knockdowns, we manage every step — including permits, safety compliance, and site clearance. Our team works with homeowners, builders, and architects to ensure the demolition phase runs smoothly, with minimal disruption to surrounding properties. Whether it’s a kitchen rip-out, bathroom strip, or entire house teardown — we deliver clean, efficient results ready for your next build phase.
Post-Construction Cleaning
After the build is done, we make it shine. GSK delivers meticulous post-construction cleaning for commercial, residential, and industrial projects across Sydney. From dust-covered floors to smudged windows and builder’s residue — we clean every surface, fitting, and corner to ensure the space is spotless, safe, and handover-ready.
Brick Cleaning
GSK provides professional brick cleaning services for new builds, renovations, and restorations across Sydney. Using industry-approved acid wash and pressure cleaning techniques, we remove mortar stains, cement residue, and construction grime — restoring your brickwork to a clean, even-toned finish.
Commercial Demolition & Strip Outs
Whether you're making way for a fresh fit-out or returning a tenancy to base build, GSK delivers safe, efficient, and fully compliant commercial demolition and strip-out services across Sydney. From internal wall removal and flooring uplift to full defits of retail, office, and hospitality spaces — we handle every stage with precision, care, and minimal disruption. Our licensed team ensures all debris is removed, services are capped off safely, and your site is left clean and ready for the next phase.
De-Fit & Make Good
Moving out of a leased space? GSK specialises in full commercial de-fit and make-good services across Sydney. We remove all tenant-installed fittings, signage, partitions, flooring, lighting, and joinery — restoring the site to its original or base-building condition in line with lease obligations. From offices and retail stores to hospitality venues, we work efficiently and cleanly, coordinating with landlords, strata, and building managers to ensure a smooth, compliant handover. Whether you need a basic de-fit or full reinstatement works, GSK has it covered.
Residential Demolition
Planning a renovation or rebuild? GSK offers safe, controlled residential demolition services tailored to homes and multi-unit dwellings across Sydney. From partial internal demolitions to full structure knockdowns, we manage every step — including permits, safety compliance, and site clearance. Our team works with homeowners, builders, and architects to ensure the demolition phase runs smoothly, with minimal disruption to surrounding properties. Whether it’s a kitchen rip-out, bathroom strip, or entire house teardown — we deliver clean, efficient results ready for your next build phase.
Post-Construction Cleaning
After the build is done, we make it shine. GSK delivers meticulous post-construction cleaning for commercial, residential, and industrial projects across Sydney. From dust-covered floors to smudged windows and builder’s residue — we clean every surface, fitting, and corner to ensure the space is spotless, safe, and handover-ready.
Brick Cleaning
GSK provides professional brick cleaning services for new builds, renovations, and restorations across Sydney. Using industry-approved acid wash and pressure cleaning techniques, we remove mortar stains, cement residue, and construction grime — restoring your brickwork to a clean, even-toned finish.
Our work
Our work
Our work
Real Jobs. Real Results. Right Here in Sydney.
See how we’ve transformed spaces with our expert demolitions, de-fits, strip outs, and post-construction cleans. We have an eye for detail like no other in the Greater Sydney region.
Office demolition & strip-out – Sydney CBD
This commercial defit and strip-out was carried out in a high-rise Sydney office, preparing the space for a full refurbishment. We removed partition walls, flooring, lighting fixtures, and all tenant-specific installations while keeping structural elements intact. Our team handled the demolition quickly and safely, managing noise, dust, and waste to meet building compliance and tight access restrictions. The result: a clean, empty shell ready for a brand-new fit-out.
Office
3 weeks
"The GSK team handled our office strip-out with speed and care. From navigating the loading dock to managing noise restrictions, they were tidy, and totally professional. Highly recommend for any make-good work."
Rachel Morgan
Office demolition & strip-out – Sydney CBD
This commercial defit and strip-out was carried out in a high-rise Sydney office, preparing the space for a full refurbishment. We removed partition walls, flooring, lighting fixtures, and all tenant-specific installations while keeping structural elements intact. Our team handled the demolition quickly and safely, managing noise, dust, and waste to meet building compliance and tight access restrictions. The result: a clean, empty shell ready for a brand-new fit-out.
Office
3 weeks
"The GSK team handled our office strip-out with speed and care. From navigating the loading dock to managing noise restrictions, they were tidy, and totally professional. Highly recommend for any make-good work."
Rachel Morgan
Office demolition & strip-out – Sydney CBD
This commercial defit and strip-out was carried out in a high-rise Sydney office, preparing the space for a full refurbishment. We removed partition walls, flooring, lighting fixtures, and all tenant-specific installations while keeping structural elements intact. Our team handled the demolition quickly and safely, managing noise, dust, and waste to meet building compliance and tight access restrictions. The result: a clean, empty shell ready for a brand-new fit-out.
Office
3 weeks
"The GSK team handled our office strip-out with speed and care. From navigating the loading dock to managing noise restrictions, they were tidy, and totally professional. Highly recommend for any make-good work."
Rachel Morgan
Post-construction clean – Haymarket office fit-out
This project involved a full post-construction clean following a multi-floor office fit-out in Haymarket. We worked alongside the builders to clean newly installed joinery, polished concrete floors, glass partitions, workstations, and kitchen areas. Timing was critical — our team cleaned overnight and during weekends to meet handover deadlines. The end result was a spotless, client-ready office delivered on time.
Office
1 week
"Flawless job. GSK turned our dusty, chaotic site into a pristine office environment in just a few days. Their team worked seamlessly with our builders and met every deadline. One of the best final cleans we’ve ever had."
Michael Turner
Post-construction clean – Haymarket office fit-out
This project involved a full post-construction clean following a multi-floor office fit-out in Haymarket. We worked alongside the builders to clean newly installed joinery, polished concrete floors, glass partitions, workstations, and kitchen areas. Timing was critical — our team cleaned overnight and during weekends to meet handover deadlines. The end result was a spotless, client-ready office delivered on time.
Office
1 week
"Flawless job. GSK turned our dusty, chaotic site into a pristine office environment in just a few days. Their team worked seamlessly with our builders and met every deadline. One of the best final cleans we’ve ever had."
Michael Turner
Post-construction clean – Haymarket office fit-out
This project involved a full post-construction clean following a multi-floor office fit-out in Haymarket. We worked alongside the builders to clean newly installed joinery, polished concrete floors, glass partitions, workstations, and kitchen areas. Timing was critical — our team cleaned overnight and during weekends to meet handover deadlines. The end result was a spotless, client-ready office delivered on time.
Office
1 week
"Flawless job. GSK turned our dusty, chaotic site into a pristine office environment in just a few days. Their team worked seamlessly with our builders and met every deadline. One of the best final cleans we’ve ever had."
Michael Turner
Post-construction + brick clean – Commercial office build
For this new office development in Western Sydney, GSK was engaged for a full post-construction clean and brick cleaning service. Our team conducted a detailed clean across floors, bathrooms, windows, and kitchens — followed by a professional acid wash of the external brick façade to remove mortar stains and construction residue. The building was handed over in showroom condition.
Office
5 days
GSK nailed every detail, the brick clean made a huge difference and the internal clean was flawless. The space looked polished and ready for tenants. They were reliable, easy to work with, and the results spoke for themselves."
Laura Davies
Post-construction + brick clean – Commercial office build
For this new office development in Western Sydney, GSK was engaged for a full post-construction clean and brick cleaning service. Our team conducted a detailed clean across floors, bathrooms, windows, and kitchens — followed by a professional acid wash of the external brick façade to remove mortar stains and construction residue. The building was handed over in showroom condition.
Office
5 days
GSK nailed every detail, the brick clean made a huge difference and the internal clean was flawless. The space looked polished and ready for tenants. They were reliable, easy to work with, and the results spoke for themselves."
Laura Davies
Post-construction + brick clean – Commercial office build
For this new office development in Western Sydney, GSK was engaged for a full post-construction clean and brick cleaning service. Our team conducted a detailed clean across floors, bathrooms, windows, and kitchens — followed by a professional acid wash of the external brick façade to remove mortar stains and construction residue. The building was handed over in showroom condition.
Office
5 days
GSK nailed every detail, the brick clean made a huge difference and the internal clean was flawless. The space looked polished and ready for tenants. They were reliable, easy to work with, and the results spoke for themselves."
Laura Davies
Testimonials
Testimonials
Testimonials
Hear from our Sydney clients - Builders, Business Owners and Residents.
Hear from our happy clients about their experience working with Refit and the quality of our craftsmanship.
GSK did an incredible job on our kitchen strip out. The work was top-notch, and the team was professional from start to finish. Highly recommend!
Emily Carter
Brilliant service from start to finish. The team was professional, communicative, and the results exceeded my expectations. Competitive on price.
James Richardson
We couldn’t be happier with our office conversion. The attention to detail and quality of work were outstanding. GSK made the whole process smooth and stress-free and also reccomended builders to us.
Sophie Williams
Dealt with Sarah from GSK Building Solutions. She was a pleasure to deal with, extremely professional and fast. We received a quote within a day and have been happy so far.
Daniel Foster
Best in the business, I had an urgent Termite issue and my store had to be completely demolished...they were quick and effective while keeping me informed...Highly recommend them.
Eren Caliskan
really great team, highly recommend as they are decently priced and quality of work is great! will definitely be using again in the future.
Bianca Macri
really great team, highly recommend as they are decently priced and quality of work is great! will definitely be using again in the future.
Bianca Macri
Best in the business, I had an urgent Termite issue and my store had to be completely demolished...they were quick and effective while keeping me informed...Highly recommend them.
Eren Caliskan
Dealt with Sarah from GSK Building Solutions. She was a pleasure to deal with, extremely professional and fast. We received a quote within a day and have been happy so far.
Daniel Foster
We couldn’t be happier with our office conversion. The attention to detail and quality of work were outstanding. GSK made the whole process smooth and stress-free and also reccomended builders to us.
Sophie Williams
Brilliant service from start to finish. The team was professional, communicative, and the results exceeded my expectations. Competitive on price.
James Richardson
GSK did an incredible job on our kitchen strip out. The work was top-notch, and the team was professional from start to finish. Highly recommend!
Emily Carter
GSK did an incredible job on our kitchen strip out. The work was top-notch, and the team was professional from start to finish. Highly recommend!
Emily Carter
Brilliant service from start to finish. The team was professional, communicative, and the results exceeded my expectations. Competitive on price.
James Richardson
We couldn’t be happier with our office conversion. The attention to detail and quality of work were outstanding. GSK made the whole process smooth and stress-free and also reccomended builders to us.
Sophie Williams
Dealt with Sarah from GSK Building Solutions. She was a pleasure to deal with, extremely professional and fast. We received a quote within a day and have been happy so far.
Daniel Foster
Best in the business, I had an urgent Termite issue and my store had to be completely demolished...they were quick and effective while keeping me informed...Highly recommend them.
Eren Caliskan
really great team, highly recommend as they are decently priced and quality of work is great! will definitely be using again in the future.
Bianca Macri
GSK did an incredible job on our kitchen strip out. The work was top-notch, and the team was professional from start to finish. Highly recommend!
Emily Carter
Brilliant service from start to finish. The team was professional, communicative, and the results exceeded my expectations. Competitive on price.
James Richardson
We couldn’t be happier with our office conversion. The attention to detail and quality of work were outstanding. GSK made the whole process smooth and stress-free and also reccomended builders to us.
Sophie Williams
Dealt with Sarah from GSK Building Solutions. She was a pleasure to deal with, extremely professional and fast. We received a quote within a day and have been happy so far.
Daniel Foster
Best in the business, I had an urgent Termite issue and my store had to be completely demolished...they were quick and effective while keeping me informed...Highly recommend them.
Eren Caliskan
really great team, highly recommend as they are decently priced and quality of work is great! will definitely be using again in the future.
Bianca Macri
GSK did an incredible job on our kitchen strip out. The work was top-notch, and the team was professional from start to finish. Highly recommend!
Emily Carter
Brilliant service from start to finish. The team was professional, communicative, and the results exceeded my expectations. Competitive on price.
James Richardson
We couldn’t be happier with our office conversion. The attention to detail and quality of work were outstanding. GSK made the whole process smooth and stress-free and also reccomended builders to us.
Sophie Williams
Dealt with Sarah from GSK Building Solutions. She was a pleasure to deal with, extremely professional and fast. We received a quote within a day and have been happy so far.
Daniel Foster
Best in the business, I had an urgent Termite issue and my store had to be completely demolished...they were quick and effective while keeping me informed...Highly recommend them.
Eren Caliskan
really great team, highly recommend as they are decently priced and quality of work is great! will definitely be using again in the future.
Bianca Macri
GSK did an incredible job on our kitchen strip out. The work was top-notch, and the team was professional from start to finish. Highly recommend!
Emily Carter
Brilliant service from start to finish. The team was professional, communicative, and the results exceeded my expectations. Competitive on price.
James Richardson
We couldn’t be happier with our office conversion. The attention to detail and quality of work were outstanding. GSK made the whole process smooth and stress-free and also reccomended builders to us.
Sophie Williams
Dealt with Sarah from GSK Building Solutions. She was a pleasure to deal with, extremely professional and fast. We received a quote within a day and have been happy so far.
Daniel Foster
Best in the business, I had an urgent Termite issue and my store had to be completely demolished...they were quick and effective while keeping me informed...Highly recommend them.
Eren Caliskan
really great team, highly recommend as they are decently priced and quality of work is great! will definitely be using again in the future.
Bianca Macri
GSK did an incredible job on our kitchen strip out. The work was top-notch, and the team was professional from start to finish. Highly recommend!
Emily Carter
Brilliant service from start to finish. The team was professional, communicative, and the results exceeded my expectations. Competitive on price.
James Richardson
We couldn’t be happier with our office conversion. The attention to detail and quality of work were outstanding. GSK made the whole process smooth and stress-free and also reccomended builders to us.
Sophie Williams
Dealt with Sarah from GSK Building Solutions. She was a pleasure to deal with, extremely professional and fast. We received a quote within a day and have been happy so far.
Daniel Foster
Best in the business, I had an urgent Termite issue and my store had to be completely demolished...they were quick and effective while keeping me informed...Highly recommend them.
Eren Caliskan
really great team, highly recommend as they are decently priced and quality of work is great! will definitely be using again in the future.
Bianca Macri
really great team, highly recommend as they are decently priced and quality of work is great! will definitely be using again in the future.
Bianca Macri
Best in the business, I had an urgent Termite issue and my store had to be completely demolished...they were quick and effective while keeping me informed...Highly recommend them.
Eren Caliskan
Dealt with Sarah from GSK Building Solutions. She was a pleasure to deal with, extremely professional and fast. We received a quote within a day and have been happy so far.
Daniel Foster
We couldn’t be happier with our office conversion. The attention to detail and quality of work were outstanding. GSK made the whole process smooth and stress-free and also reccomended builders to us.
Sophie Williams
Brilliant service from start to finish. The team was professional, communicative, and the results exceeded my expectations. Competitive on price.
James Richardson
GSK did an incredible job on our kitchen strip out. The work was top-notch, and the team was professional from start to finish. Highly recommend!
Emily Carter
FAQs
FAQs
FAQs
Clearing It Up –
Your Questions Answered
Clearing It Up –
Your Questions Answered
Clearing It Up –
Your Questions Answered
Got more questions? Send us your enquiry below
Got more questions? Send us your enquiry below
Got more questions? Send us your enquiry below
What’s included in your commercial defit and strip-out services?
Our commercial defits and strip-outs include the safe removal of all fixtures, fittings, partitions, flooring, ceiling tiles, signage, and non-structural elements. We ensure the space is returned to its original or make-good condition, ready for new tenants or refurbishment works.
Do you handle internal demolitions for commercial spaces?
Yes. We specialise in non-structural internal demolitions, including removal of walls, flooring, ceilings, and internal features. All demolition work is carried out with strict safety compliance, proper waste disposal, and minimal disruption to surrounding areas.
What’s the difference between a defit and a demolition?
A defit focuses on removing tenant-specific items (like fittings, signage, flooring) to restore a lease space to its original condition. Demolition is more extensive and may involve removing built structures. We offer both — and help you choose the right solution based on your project's needs.
Do you provide post-construction cleaning for commercial builds?
Absolutely. Once construction is complete, our team steps in to provide detailed post-build cleans — including dust removal, window polishing, floor scrubbing, sanitising high-touch areas, and preparing the space for inspections, handover, or immediate use.
Are your services compliant with NSW safety and disposal regulations?
Yes. GSK is fully compliant with WorkSafe NSW and EPA regulations. We handle all waste removal and site cleans using licensed contractors and industry-approved processes — ensuring safety, legal compliance, and peace of mind.
Do you offer brick cleaning for new builds or restorations?
We do. Our brick cleaning service removes excess mortar, cement residue, and construction grime from new or existing brickwork using specialised acid wash and pressure cleaning methods — leaving your façade clean, even-toned, and presentable.
How quickly can you mobilise for a strip-out or clean?
We offer flexible scheduling and fast mobilisation for urgent projects across Sydney. For commercial strip-outs or cleans with tight timelines, we can often begin within 24–48 hours depending on scope and access.
What’s included in your commercial defit and strip-out services?
Our commercial defits and strip-outs include the safe removal of all fixtures, fittings, partitions, flooring, ceiling tiles, signage, and non-structural elements. We ensure the space is returned to its original or make-good condition, ready for new tenants or refurbishment works.
Do you handle internal demolitions for commercial spaces?
Yes. We specialise in non-structural internal demolitions, including removal of walls, flooring, ceilings, and internal features. All demolition work is carried out with strict safety compliance, proper waste disposal, and minimal disruption to surrounding areas.
What’s the difference between a defit and a demolition?
A defit focuses on removing tenant-specific items (like fittings, signage, flooring) to restore a lease space to its original condition. Demolition is more extensive and may involve removing built structures. We offer both — and help you choose the right solution based on your project's needs.
Do you provide post-construction cleaning for commercial builds?
Absolutely. Once construction is complete, our team steps in to provide detailed post-build cleans — including dust removal, window polishing, floor scrubbing, sanitising high-touch areas, and preparing the space for inspections, handover, or immediate use.
Are your services compliant with NSW safety and disposal regulations?
Yes. GSK is fully compliant with WorkSafe NSW and EPA regulations. We handle all waste removal and site cleans using licensed contractors and industry-approved processes — ensuring safety, legal compliance, and peace of mind.
Do you offer brick cleaning for new builds or restorations?
We do. Our brick cleaning service removes excess mortar, cement residue, and construction grime from new or existing brickwork using specialised acid wash and pressure cleaning methods — leaving your façade clean, even-toned, and presentable.
How quickly can you mobilise for a strip-out or clean?
We offer flexible scheduling and fast mobilisation for urgent projects across Sydney. For commercial strip-outs or cleans with tight timelines, we can often begin within 24–48 hours depending on scope and access.
What’s included in your commercial defit and strip-out services?
Our commercial defits and strip-outs include the safe removal of all fixtures, fittings, partitions, flooring, ceiling tiles, signage, and non-structural elements. We ensure the space is returned to its original or make-good condition, ready for new tenants or refurbishment works.
Do you handle internal demolitions for commercial spaces?
Yes. We specialise in non-structural internal demolitions, including removal of walls, flooring, ceilings, and internal features. All demolition work is carried out with strict safety compliance, proper waste disposal, and minimal disruption to surrounding areas.
What’s the difference between a defit and a demolition?
A defit focuses on removing tenant-specific items (like fittings, signage, flooring) to restore a lease space to its original condition. Demolition is more extensive and may involve removing built structures. We offer both — and help you choose the right solution based on your project's needs.
Do you provide post-construction cleaning for commercial builds?
Absolutely. Once construction is complete, our team steps in to provide detailed post-build cleans — including dust removal, window polishing, floor scrubbing, sanitising high-touch areas, and preparing the space for inspections, handover, or immediate use.
Are your services compliant with NSW safety and disposal regulations?
Yes. GSK is fully compliant with WorkSafe NSW and EPA regulations. We handle all waste removal and site cleans using licensed contractors and industry-approved processes — ensuring safety, legal compliance, and peace of mind.
Do you offer brick cleaning for new builds or restorations?
We do. Our brick cleaning service removes excess mortar, cement residue, and construction grime from new or existing brickwork using specialised acid wash and pressure cleaning methods — leaving your façade clean, even-toned, and presentable.
How quickly can you mobilise for a strip-out or clean?
We offer flexible scheduling and fast mobilisation for urgent projects across Sydney. For commercial strip-outs or cleans with tight timelines, we can often begin within 24–48 hours depending on scope and access.